An ankle sprain results when a rotational or twisting injury causes the ligaments that help stabilize the ankle joint are stretched or torn. There are multiple ligaments which stabilize the ankle joint. The 3 ligaments on the outside part of the ankle are known as the anterior talofibular ligament, calcaneofibular ligament, and posterior talofibular ligament. The deltoid ligament complex is present on the inner part of the ankle. The syndesmotic ligament connects the 2 main bones of the ankle the tibia and the fibula. Any of these ligaments can be injured during an ankle sprain depending on the severity of the injury.
